Created temporary directory: /tmp/pip-ephem-wheel-cache-u38wd98z
Created temporary directory: /tmp/pip-req-tracker-vkap9lho
Created requirements tracker '/tmp/pip-req-tracker-vkap9lho'
Created temporary directory: /tmp/pip-wheel-4iixscdz
Collecting khufu==1.3.1
  1 location(s) to search for versions of khufu:
  * https://pypi.org/simple/khufu/
  Getting page https://pypi.org/simple/khufu/
  Analyzing links from page https://pypi.org/simple/khufu/
    Skipping link https://files.pythonhosted.org/packages/b1/90/d5f52605179ee809d9a9b82c202d17bcb656339ceef8681da45fc9b17e5e/khufu-1.2.0-py2-none-any.whl#sha256=018503a0e66bb2daa2b7ee82a6ad109ec3cc4d8a40b33d110faa07e26463bcee (from https://pypi.org/simple/khufu/); it is not compatible with this Python
    Found link https://files.pythonhosted.org/packages/0e/bf/0d896b59f497618e5404c7d3f7d43e29ea1486e38daf0811d8ccb8f926b7/khufu-1.2.0.tar.gz#sha256=4c1a520ea69014eb64a26afaa769945ae67433f2b24fcb1f8cbf173e772f8e96 (from https://pypi.org/simple/khufu/), version: 1.2.0
    Skipping link https://files.pythonhosted.org/packages/9b/e7/15d0ea865f436920d2110a9efecc9a10b22dad0b14dd1a12fc6a49be54fa/khufu-1.2.1-py2-none-any.whl#sha256=3f39901aac42b5366a1f634212718ec1c9589007fe94cf12b62c0fb321f508d3 (from https://pypi.org/simple/khufu/); it is not compatible with this Python
    Found link https://files.pythonhosted.org/packages/07/22/7a279910bf044d65b3b2d5ec63cc89adb33a7156e2f09375ad4a4e2b78ea/khufu-1.2.1.tar.gz#sha256=9d4cdf40c8f5c1341a5ff7cc4cf2703482f8425900414258a1e44ca189309b0b (from https://pypi.org/simple/khufu/), version: 1.2.1
    Skipping link https://files.pythonhosted.org/packages/c1/77/bc1834ea119196b2900cec593804c6fdc759437218b8a520aa4c16e07ae7/khufu-1.3.0-py2-none-any.whl#sha256=d156e51ce7723c3894e686c8078c23476f1e5c88ddce55fc3ff85107d90037e7 (from https://pypi.org/simple/khufu/); it is not compatible with this Python
    Found link https://files.pythonhosted.org/packages/0e/42/697da85c9ce8088b74d0cc546792164b8a47d542f6e76043a1fe51f4b34b/khufu-1.3.0-py3-none-any.whl#sha256=8666f5aab5e94cb374a4aac9b56901fb103cccfe24a283714ccf5533602e9afa (from https://pypi.org/simple/khufu/), version: 1.3.0
    Found link https://files.pythonhosted.org/packages/53/0d/839d01c181c4f8836d66e64d9efc35bd993ddf4d7f8768a9a829de531828/khufu-1.3.0.tar.gz#sha256=c045aea9491b983e68f969d92bd98791dc8da6893de2450050e22db91374cde9 (from https://pypi.org/simple/khufu/), version: 1.3.0
    Skipping link https://files.pythonhosted.org/packages/8a/4e/cb78de9cc162339efd38ff252841e8ad0175634fffe6e3463bb0a09d6e17/khufu-1.3.1-py2-none-any.whl#sha256=04c89e3037f7e4332f6eb130655ee002f2b63013f2b27c8b4601b43a5e6c2f64 (from https://pypi.org/simple/khufu/); it is not compatible with this Python
    Found link https://files.pythonhosted.org/packages/cd/fa/9d54e50421244950c6de7812ed67ff4d7ccf399179cf0870140a15ebcfe8/khufu-1.3.1-py3-none-any.whl#sha256=349d1f0c376fc5025bc6a4660d489a590dd3e5fef26a8caf08fb6e8fc6001870 (from https://pypi.org/simple/khufu/), version: 1.3.1
    Found link https://files.pythonhosted.org/packages/cb/1f/f5efcb618cf9686eeac2bd769faa6c6da033fcfb293a6420ac869c5f3448/khufu-1.3.1.tar.gz#sha256=4773a5746f1b2c4e305e8b468e9f70c81a29a55e474c4f0756581315c7635561 (from https://pypi.org/simple/khufu/), version: 1.3.1
  Using version 1.3.1 (newest of versions: 1.3.1)
  Created temporary directory: /tmp/pip-unpack-4tsy3gc9
  Downloading https://files.pythonhosted.org/packages/cd/fa/9d54e50421244950c6de7812ed67ff4d7ccf399179cf0870140a15ebcfe8/khufu-1.3.1-py3-none-any.whl (103kB)
  Downloading from URL https://files.pythonhosted.org/packages/cd/fa/9d54e50421244950c6de7812ed67ff4d7ccf399179cf0870140a15ebcfe8/khufu-1.3.1-py3-none-any.whl#sha256=349d1f0c376fc5025bc6a4660d489a590dd3e5fef26a8caf08fb6e8fc6001870 (from https://pypi.org/simple/khufu/)
  Saved /tmp/tmpc_miot8j/khufu-1.3.1-py3-none-any.whl
  Added khufu==1.3.1 from https://files.pythonhosted.org/packages/cd/fa/9d54e50421244950c6de7812ed67ff4d7ccf399179cf0870140a15ebcfe8/khufu-1.3.1-py3-none-any.whl#sha256=349d1f0c376fc5025bc6a4660d489a590dd3e5fef26a8caf08fb6e8fc6001870 to build tracker '/tmp/pip-req-tracker-vkap9lho'
  Removed khufu==1.3.1 from https://files.pythonhosted.org/packages/cd/fa/9d54e50421244950c6de7812ed67ff4d7ccf399179cf0870140a15ebcfe8/khufu-1.3.1-py3-none-any.whl#sha256=349d1f0c376fc5025bc6a4660d489a590dd3e5fef26a8caf08fb6e8fc6001870 from build tracker '/tmp/pip-req-tracker-vkap9lho'
Skipping khufu, due to already being wheel.
Cleaning up...
  Removing source in /tmp/pip-wheel-4iixscdz/khufu
Removed build tracker '/tmp/pip-req-tracker-vkap9lho'